scholarly journals Heavy-to-Light Form Factors in the Quark Model with Infrared Heavy-Quark Propagators

1998 ◽  
Vol 24 (4) ◽  
pp. 201-212 ◽  
Author(s):  
M. A. Ivanov ◽  
T. Mizutani ◽  
Yu. M. Valit
Keyword(s):  
Heavy Quark ◽  
Quark Model ◽  
Form Factors ◽  
Light Form

scholarly journals Heavy quark expansion and universal form factors in the quark model

1997 ◽  
Vol 56 (11) ◽  
pp. 7089-7104 ◽  
Author(s):  
Dmitri Melikhov
Keyword(s):  
Heavy Quark ◽  
Quark Model ◽  
Form Factors ◽  
Universal Form

scholarly journals Quark model form factors for heavy-quark effective theory

1994 ◽  
Vol 412 (1-2) ◽  
pp. 169-180 ◽  
Author(s):  
F.E. Close ◽  
A. Wambach
Keyword(s):  
Heavy Quark ◽  
Quark Model ◽  
Form Factors ◽  
Effective Theory ◽  
Heavy Quark Effective Theory ◽  
Model Form

scholarly journals Heavy-to-light form factors in the final hadron large energy limit: Covariant quark model approach

1999 ◽  
Vol 451 (1-2) ◽  
pp. 187-194 ◽  
Author(s):  
J. Charles ◽  
A. Le Yaouanc ◽  
L. Oliver ◽  
O. Pène ◽  
J.-C. Raynal
Keyword(s):  
Quark Model ◽  
Form Factors ◽  
Large Energy ◽  
Energy Limit ◽  
Light Form ◽  
Covariant Quark Model ◽  
Model Approach

q2-Dependence of Heavy-to-Light Transitions

1997 ◽  
Vol 12 (09) ◽  
pp. 653-660 ◽  
Author(s):  
M. A. Ivanov ◽  
Yu. M. Valit
Keyword(s):  
Quark Model ◽  
Form Factors ◽  
Physical Region ◽  
Relativistic Quark Model ◽  
Vector Form ◽  
Pole Dominance ◽  
Axial Form ◽  
Light Form

The q2-dependence of the heavy-to-light form factors in the full physical region is obtained within the relativistic quark model with heavy infrapropagators. It is shown that the behavior of the vector form factors agrees with the pole dominance hypothesis whereas the behavior of the axial form factors is rather different from the polelike function.

Heavy quark 1/m Q expansion of meson weak decay form factors in the relativistic quark model

1995 ◽  
Vol 66 (1-2) ◽  
pp. 119-127 ◽  
Author(s):  
R. N. Faustov ◽  
V. O. Galkin
Keyword(s):  
Heavy Quark ◽  
Quark Model ◽  
Form Factors ◽  
Weak Decay ◽  
Relativistic Quark Model ◽  
Decay Form ◽  
Meson Weak Decay

Kℓ3 form factors from current algebra and the relativistic quark model

1969 ◽  
Vol 11 (1) ◽  
pp. 61-68 ◽  
Author(s):  
M. Böhm ◽  
D. Rein
Keyword(s):  
Quark Model ◽  
Current Algebra ◽  
Form Factors ◽  
Relativistic Quark Model

scholarly journals Consistent treatment of rapidity divergence in soft-collinear effective theory

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Junegone Chay ◽  
Chul Kim
Keyword(s):  
Heavy Quark ◽  
Soft Mode ◽  
Form Factors ◽  
Effective Theory ◽  
Large Rapidity ◽  
Soft Modes ◽  
Heavy Quark Mass ◽  
Soft Collinear Effective Theory ◽  
Matching Procedure ◽  
Consistent Treatment

Abstract In soft-collinear effective theory, we analyze the structure of rapidity divergence due to the collinear and soft modes residing in disparate phase spaces. The idea of an effective theory is applied to a system of collinear modes with large rapidity and soft modes with small rapidity. The large-rapidity (collinear) modes are integrated out to obtain the effective theory for the small-rapidity (soft) modes. The full SCET with the collinear and soft modes should be matched onto the soft theory at the rapidity boundary, and the matching procedure becomes exactly the zero-bin subtraction. The large-rapidity region is out of reach for the soft mode, which results in the rapidity divergence. The rapidity divergence in the collinear sector comes from the zero-bin subtraction, which ensures the cancellation of the rapidity divergences from the soft and collinear sectors. In order to treat the rapidity divergence, we construct the rapidity regulators consistently for all the modes. They are generalized by assigning independent rapidity scales for different collinear directions. The soft regulator incorporates the correct directional dependence when the innate collinear directions are not back-to-back, which is discussed in the N-jet operator. As an application, we consider the Sudakov form factor for the back-to-back collinear current and the soft-collinear current, where the soft rapidity regulator for a soft quark is developed. We extend the analysis to the boosted heavy quark sector and exploit the delicacy with the presence of the heavy quark mass. We present the resummed results of large logarithms in the form factors for various currents with the light and the heavy quarks, employing the renormalization group evolution on the renormalization and the rapidity scales.

scholarly journals Covariant nucleon electromagnetic form factors from the Goldstone-boson-exchange quark model

2001 ◽  
Vol 511 (1) ◽  
pp. 33-39 ◽  
Author(s):  
R.F. Wagenbrunn ◽  
S. Boffi ◽  
W. Klink ◽  
W. Plessas ◽  
M. Radici
Keyword(s):  
Quark Model ◽  
Goldstone Boson ◽  
Form Factors ◽  
Electromagnetic Form Factors ◽  
Boson Exchange

scholarly journals Sudakov Resummation for Subleading SCET Currents and Heavy-to-Light Form Factors

2004 ◽  
Vol 2004 (07) ◽  
pp. 081-081 ◽  
Author(s):  
Richard J Hill ◽  
Thomas Becher ◽  
Seung J Lee ◽  
Matthias Neubert
Keyword(s):  
Form Factors ◽  
Light Form
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